Kinetics of the oxygen reduction reaction

The impedance polarization performance of LSM electrode is closely related to the mechanism and kinetics of the oxygen reduction reactions. 02 reduction at SOFC cathodes is the most heavily studied subject, and this subject is sufficiently broad and complex to warrant its own review. Interested readers should consult the recent excellent articles by Adler [1] and Fleig [55], Here, only the polarization performance and its influencing factors are discussed. 

The Space Charge Layer of Galena and the Kinetics of the Oxygen Reduction Reaction. The reduction of oxygen on the surface... 

A final example of electrochemical kinetics will consider a return of the Pt WE from before but now exposed to a neutral (pH 7.2) solution into which oxygen is bubbled. The kinetics of the oxygen reduction reaction (ORR) will be studied. The data generated might appear as shown in Fig. 24. The reversible potential for the ORR in pH 7 solution, according to the Nernst equation, is... 

The effect of Pt crystallite size on the kinetics of the oxygen reduction reaction is a long-standing problem in electrocatalysis. An excellent review of experimental work with carbon-supported Pt was presented by Kinoshita [33] for work prior to about 1990. Kinoshita concluded that the change in fraction of surface atoms on the... 

By operating at about 650 °C, the kinetics of the oxygen reduction reaction at the positive electrode are sufficiently accelerated that it is no longer necessary to use platinum-based electrocatalysts. Usually, the positive electrode is fabricated from lithiated nickel oxide (Li Nii 0, where 0.02[Pg.211]

Zurilla RW, Sen RK, Yeager E (1978) The kinetics of the oxygen reduction reaction on gold in alkaline solution. J Electrochem Soc 125 1103-1109... 

Two parts are treated one is the physical and chemical features of materials of molten carbonate fuel cells (MCFCs), and the other is performance analysis with a 100 cm class single cell. The characteristics of the fuel cell are determined by the electrolyte. The chemical and physical properties of the electrolyte with respect to gas solubility, ionic conductivity, dissolution of cathode material, corrosion, and electrolyte loss in the real cell are introduced. The reactirm characteristics of hydrogen oxidation in molten carbonates and materials for the anode of the MCFC are reviewed. The kinetics of the oxygen reduction reaction in the molten carbonates and state of the art of cathode materials are also described. Based on the reaction kinetics of electrodes, a performance analysis of MCFCs is introduced. The performance analysis has importance with respect to the increase in performance through material development and the extension of cell life by cell development. Conventional as well as relatively new analysis methods are introduced. 

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